32-Point Quality Inspection Protocol & Physical Lab
Every raw titanium coil, intermediate stamped shell, and finished vacuum tumbler undergoes rigorous physical and chemical verification to guarantee zero heavy metal leaching and lifetime durability.
ASTM B265 Raw Coil Verification
100% of raw sponge titanium coils are accompanied by EN 10204 3.1 Mill Test Certificates (MTC). We perform optical emission spectrometry to verify Ti purity ≥99.7% and zero recycled scrap contamination.
100% Negative-Pressure Helium Leak Detection
Every single double-wall vacuum tumbler passes automated helium mass spectrometer leak testing with a rejection sensitivity threshold of 1x10โปโธ mbarยทl/s.
FDA & LFGB Food Contact Extraction
Batch tests in 4% acetic acid at 100°C for 2 hours verify zero dissolution of lead, cadmium, arsenic, or nickel, passing US FDA 21 CFR and German LFGB ยง30/ยง31 standards.
1.5m Concrete Drop & Latch Fatigue
Bento box latches endure 10,000 cycles of mechanical open/close actuation without spring fatigue; filled containers pass 1.5-meter concrete drop impacts with 0% liquid leakage.